一个高精度梯形校正公式的构造及其渐近性
The Construction and Asymptotic Behavior of a High-precision Trapezoidal Correction Formula
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摘要: 以低阶梯形公式为构筑基础,利用数值积分公式代数精度的概念确定求积系数,构造得到一个新的具有5 次代数精度的梯形校正公式,并确定其余项表达式。最后,讨论余项中介值点的渐近性。Abstract: Based on a low order trapezoidal formula, using the concept of algebraic accuracy in numerical integration formulas to determine the quadrature coefficients, a new trapezoidal correction formula with algebraic accuracy of degree five is constructed, and the expression of remainder is obtained. Finally, the asymptotic property of the intermediate value point of the remainder is discussed.